The researchers then tested the dogs' ability to distinguish between human facial expressions by showing them the other half of the person's face on images totally different from the ones used in training.
研究人员随后给狗狗展示与训练中完全不同的人的另一半脸，来测试它们区分人类面部表情的能力。
2
For half the group, researchers played the sounds of some of the images used in the memory test.
研究人员为其中一半的志愿者播放记忆测试中部分图片所对应的声音。
3
“Half of all travelers have struggled with poorly constructed, confusing and inaccurate websites that don’t provide them with sufficient images and information, ” the study said.